Glossary Definition for RS-422/RS-485

Definition

RS-485 and RS-422 are serial interface standards in which data is sent in a differential pair (two wires, or twisted pair cable), which allows greater distances and higher data rates than non-differential serial schemes such as RS-232. See: Differential Signaling.

RS-485 and RS-422 can be configured for full-duplex or half-duplex bus systems.

See Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards to learn about the differences between RS-232, RS-422, and RS-485.

Synonyms

• EIA-485
• RS-485
• RS-422
• RS422
• RS485
• EIA-422

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